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The technology of high efficiency R134a two-stage centrifugal compressor and chiller.

Author(s) : LIU C. C., CHIANG C. P., CHIANG H. C., et al.

Summary

This paper introduces the technology development of a two-stage R134a centrifugal compressor and its chiller system in Taiwan. The design for improving compressor or chiller efficiency in a broad operation range is illustrated. For the compressor, its theoretical performance, capacity regulation mechanisms, bearings consideration are discussed; and for the chiller system, refrigerant expansion devices, lubricant system, motor cooling system, surge control strategy are explained. The energy efficiency of prototype centrifugal chiller has reached up to a COP of 6.7 (0.53 kW/RT) outperforming many products in the market.

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Pages: pp. 143-148

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Details

  • Original title: The technology of high efficiency R134a two-stage centrifugal compressor and chiller.
  • Record ID : 2010-0897
  • Languages: English
  • Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Publication date: 2009/05/20

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